Black sponge belt with transverse groove for Pillow Packing Machine
In the final sealing stage of a Pillow Packing Machine, managing trapped air is critical to ensuring a professional, compact, and shelf-ready finish. The Black Sponge Exhaust Belt with Transverse Grooves is specifically engineered to solve the common problem of “bag bloating” by effectively venting excess air before the final seal. YONGHANG specialized belts are…
In the final sealing stage of a Pillow Packing Machine, managing trapped air is critical to ensuring a professional, compact, and shelf-ready finish. The Black Sponge Exhaust Belt with Transverse Grooves is specifically engineered to solve the common problem of “bag bloating” by effectively venting excess air before the final seal.
YONGHANG specialized belts are designed to maximize your machine’s uptime. By integrating our grooved exhaust technology, you can significantly reduce rejection rates caused by poor seal quality or air retention.
Blue cloth Sponge caoting parameter
| Brand | Yonghang |
| Product | Black sponge belt with transverse groove （Open） |
| Color | black |
| Standard thicknesses | 17/20mm |
| Working temperature | -10℃~+70℃ |
| Hardness/Density | / |
| Min. disc diameter: | 10x coating thickness |
| Base Material | PVC PU/Nylon flat belt etc. |
| Application | Pillow Packing Machine exhaust belt |
| Key Advantage | High recovery rate (returns to shape instantly after compression) |
| Water absorption | High water absorption rate |
Common Specifications Table
| Length(mm) | Width(mm) | Thickness(mm) |
| 800 | 200 | 17 |
| 1150 | 150 | 17 |
| 1180 | 200 | 17 |
| 1430 | 150 | 17 |
| 1430 | 200 | 17 |
| 2360 | 80 | 17 |
| 2640 | 80 | 17 |
How the Transverse Grooves Work
Unlike standard flat-surface belts that can trap air inside the film, the precision-cut transverse grooves serve a vital mechanical purpose:
- Integrated Air Venting: As the belt compresses the package, these grooves create micro-channels that allow trapped air to escape backward or to the sides, ensuring a tight, vacuum-like fit.
- Adaptive Pressure Distribution: The grooved design increases the belt’s flexibility, allowing it to “contour” around irregularly shaped products (such as baked goods or snack foods) without applying excessive force that could damage the contents.
Applications
Pillow Packing Machine exhaust belt
Pillow Packing Machine exhaust belt
Black sponge belt with transverse groove for Pillow Packing Machine
Advantages
High Resilience & Memory: Utilizing a specialized industrial sponge,this belt provides an ultra-soft touch. It offers a deep compression range to “hug” the product and returns to its original shape instantly, supporting high-speed, continuous production cycles.
Superior High-Friction Grip: The natural tackiness of the sponge surface ensures a non-slip grip on packaging films. This guarantees that the exhaust process stays perfectly synchronized with the film speed, preventing any misalignment.
Industrial Durability: The black material is chosen for its resistance to industrial dust, oils, and UV exposure. It maintains a clean, professional appearance in factory environments longer than lighter-colored alternatives.
Yonghang Pro-Tip for Optimal Exhaust Performance
For the best results, the installation pressure should be calibrated so that the sponge is slightly compressed upon contact with the product. If you are handling high-thickness films or rigid packaging, we recommend wider or deeper grooves to facilitate higher air-flow volume.
